Portable fire alarm unit



Sept. 16, 1952 s. NucclQ 2,611,016.

PORTABLE FIRE ALARM UNIT Filed March 29, 195o m46 Y y 416.:

Y TTRNEK Patented Sept. 16, 1952 ,uNirEbsrATe-s 2,611,016 Y kPorrrABLE FIRE ALABMUNiT Samuel' Nuccio, VKansas"City,`*Mo.

- Y applicati@ March 29, 1950,'se'ri1 N.. 152,667--A 5 1 claim. (C1. iwf-311i" The present invention relates to alarm devices. such as re alarms and the like', and aims to devise a convenient and compact portable device or unit, adapted for eiiicient use as a portable re alarm.

For accomplishing this purpose, I have devised a construction comprising the necessary elements for operation in emitting an audible alarm and proper circuit connections therefor, all housed Within a suitable enclosure or casing, together with an appropriate thermal control element, such as a thermostatic device, in operative or control relation to the circuit and forming a part of the same unitary and compact assembly.

It is further sought to provide a comparatively simple and inexpensive construction comprised of standard or conventional elements readily procured and adapted to be economically assembled in a compact form and without complications. and of such a nature as to serve as a portable or baggage item-to be carried from place to place in a convenient manner.

With the foregoing general object in view, the invention will now be described by reference to the accompanying drawing, illustrating one serviceable form of construction which I have devised for embodying the proposed features of improvement, after which the particular features or combination thereof deemed to be novel and patentable will be specically set forth and claimed.

In the drawing- Figure 1 is a front elevation illustrating a portable re alarm unit constructed in accordance with the present invention;

Figure 2 is a side view of the same;

Figure 3 is a rear elevation of the device with a portion of the casing structure broken away to disclose the interior parts;

Figure 4 is a transverse sectional View, representing a section taken on the line 4-4 of Figure 3; and

Figure 5 is a diagram of the electric circuit connections between the parts of the unit.

-Referring now to the accompanying drawing in detail, my portable re alarm unit is illustrated as comprising a casing structure made up of a front panel 8 and a back panel i0 spaced apart by means of a plurality of sleeves i2 and secured in such spaced relation by means of bolts I4 and nuts i6, said bolts serving also as means for supporting a flexible closure strip I8 extending continuously around the device between the outer margins of said panels 8 and ll] .l and secured together in this position` by screw fastenings 20 at the'ends of the strip,-as repre-4 sented in Figure 3..` v y,

Within the space aiorded by said casing structure is mounted a conventional form of electrically operated bell unit 22 which is secured to one of the panels, as by means of screws 24. Within said space is also mounted a set of battery cells 26, which are adapted to be removably secured in the position illustrated by means of a bracket member 28 secured to the panel l0 by screws 30 and also formed with spring retaining fingers 32 for removably embracing the battery cells Z. The said bracket member 28 is also formed With suitable spring-contact fingers 34 for making appropriate electrical contact with the opposite ends of the cell battery, and is further provided with a pair of binding posts 36 for attachment of the necessary conducting or circuit wires, including a conductor 38 connecting to the said bell unit 22 and also a conductor 40 for connecting with a conventional form of thermostat device 42 suitably mounted at the exterior of the panel 8, as illustrated in Figures 1, 2 and 4. The thermostat device 42 is also provided with a conductor wire connecting same with said bell unit, as indicated at v44 in Figures 3, 4 and 5.

With the device constructed as above described, the thermostat device may be set (by means of its adjusting element 43) to operate at any desired temperature, such as any excessive temperature resulting from a re in the vicinity of the location of the device, thereby closing the circuit through the electric connections to the bell unit, and thus sounding the alarm. The closure strip I8 is preferably provided with a plurality of openings 45 as indicated in Figure 2 for more eiectively emitting the alarm signal.

Thus an efficient and compact device is provided for the purposes of the invention, which is not only of a very simple and inexpensive construction but very practical for portable use; and for convenience the same may be provided with a tcp lug or .bracket 46 readily adapting the unit to be suspended in position at the point of use. It will also be understood that, as an optional or alternative mode of use, the unit may be employed in connection with a house lighting circuit by connection of the same to the binding posts 36 and simply substituting a conventional form of transformer element (not shown) in lieu of the battery cells 26, as will be `readily understood.

3 vice, what I claim as the essential features of construction constituting my invention is herein set forth in the appended claim:

In a portable re alarm device, a casing structure comprising a pair of panels separated by spacing sleeves abutting the opposed inner faces of the panels and enclosing bolt fastenings securing said panels in spaced relation, an electrically actuatedbell unit and batter-y ,oells enclosed Within the space between said panels at the opposite sides of said space respectively, a bracket structure secured to one of said panels within said space and formed with spring retaining iingers for removable clampingV engage-V ment with said battery cells and also :having spring contact fingers in circuit with said bell unit and adapted for electric contacting engage ment with said battery cells, a thermostat device carried by one of saidspaced panels and provided with electric control connections to both said-'battery' cells and-said bell unit for actuating 'the 'latterin response to the operation 4of vsaid thermostat device, and a closures'trip' of .iiexible material extending continuously around the space between said panels and having securing means removably connecting the ends of said strip for retaining the latter in supporting engagement with said spacing sleeves exteriorly thereof, the spring retaining fingers of said bracket structure being spread in open relation at the exterior of said space between said panels foriacilitating replacement of the battery cells von removal .oi' said closure strip.

SAMUEL NUCCIO.

REFERENCES CITED rlhe 'following references are of record in the file .ofthis patent:

UNI'IEEID .STATES PATENTS Number Name Date 991,053 Farley May 2, 1911 20 2,029,402 Alexander Feb. 4, 1936 2,446,794 -Thornton Aug. 10, 1948 '2,469,501 Gogniat May 10, 1949 

